***********************************************************************
***********           PANJIT International Inc.             ***********
***********************************************************************
*Apr 22, 2020                                                         *
*                                                                     *
*This SPICE Model describes the characteristics of a typical device   *
*and does not respresent the specification. Designer should refer to  *
*the same type name data sheet for specification limits.              *
***********************************************************************
*$
.subckt BZT52-B2V4 A K 
.param
+vc0 = 8.046e-9		 vc1 = 1.286e-6		 vc2 = 2.850		 vc3 = 7.060e-6		 vc4 = 7.430
+tc1 = 6.351e-3		 tc2 = 1.521e-3		 tc3 = 3.941e-3		 tc4 = 1.321e-3
.func irpwr(v) {(vc0+vc1*v^vc2)*(1.0+tc1*(temp-25)*exp(tc2*(temp-25)))+(vc3*v^vc4)*(1.0+tc3*(temp-25)*exp(tc4*(temp-25)))}
d1 A K zener
g1 K A value = {irpwr(v(K,A))}
.model zener d
***** flag parameter *****
+level = 1 
***** dc model parameter *****
+ is = 1.458e-14	   n = 1.124		  rs = 3.870e-1
+ibv = 1e-3		 nbv = 3.5		  bv = 2.4
+ikf = 4.949e-1
***** capacitance parameter *****
+cjo = 2.155e-10	   m = 2.400e-1		  vj = 5.394e-1 
+ fc = 0.5
***** temperature coefficient *****
+tnom = 25		  eg = 1.080		 xti = 3
+trs1 = 5.927e-4	trs2 = 2.082e-6		tikf = 7.0e-3
+tbv1 = -6.067e-4	tbv2 = 1.109e-6
.ends BZT52-B2V4
*$
